cookbook: Cleaned up redundant comments in code example
cookbook: Cleaned up redundant comments in code example

Removed comments which are only relevant in my local build
environment.

Distrotech/clutter,dlespiau/clutter,heysion/clutter-clone,heysion/clutter-clone,jigpu/clutter,spatulasnout/clutter,Distrotech/clutter,nobled/clutter,djdeath/clutter-android,GNOME/clutter,djdeath/clutter,djdeath/clutter,djdeath/clutter,heysion/clutter-clone,kerrickstaley/clutter-vala,ebassi/clutter,djdeath/clutter-multithreaded,kerrickstaley/clutter-vala,jigpu/clutter,collects/clutter,spatulasnout/clutter,GNOME/clutter,jigpu/clutter,djdeath/clutter,djdeath/clutter-multithreaded,nobled/clutter,Distrotech/clutter,spatulasnout/clutter,jigpu/clutter,nobled/clutter,collects/clutter,djdeath/clutter-android,Distrotech/clutter,djdeath/clutter-android,jigpu/clutter,ebassi/clutter,djdeath/clutter-android,ebassi/clutter,ebassi/clutter,heysion/clutter-clone,kerrickstaley/clutter-vala,spatulasnout/clutter,djdeath/clutter,heysion/clutter-clone,collects/clutter,ebassi/clutter,djdeath/clutter-multithreaded,dlespiau/clutter,djdeath/clutter,kerrickstaley/clutter-vala,jigpu/clutter,dlespiau/clutter,djdeath/clutter-multithreaded,GNOME/clutter,collects/clutter,GNOME/clutter,spatulasnout/clutter,Distrotech/clutter,GNOME/clutter,Distrotech/clutter,djdeath/clutter-android,collects/clutter